PPCGeeks - Visual Voicemail do you want it? Do you want Security...come and GET IT!

Good evening to all,
I stumbled across a site www.motionapps.com Here I found two interesting applications. mSafe: This will allow one to remotely lock their mobile phone via SMS text. mVisualVoicemail: This appears to work in conjuction to another application or capability. I have successfully installed both apps. I have tried, with success, mSafe. There are several other features that makes this application interesting, as for mVisualVoicemail, I was hoping one could assist in explaining how to get this application to work properly.